.sidebar {
  width: 100%;
  height: 90px;
  background: #eee;
  position: fixed;
  .sidebar_content {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    ul {
      padding: 0;
      display: flex;
      li {
        display: inline-block;
        width: 20%;
        border-bottom: 6px;
        list-style: none;
        font-size: 28px;
        color: #333;
        text-align: center;
        line-height: 84px;
        cursor: pointer;
      }
      .active {
        border-bottom: 6px solid #3d69bd;
      }
    }
  }
}
